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authorLinus Torvalds <torvalds@linux-foundation.org>2023-08-03 04:10:26 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-08-03 04:10:26 +0300
commita4e98a30bc958694579dd5346aa6fcd38b5afe86 (patch)
treecca2420db5cb5e14c57ee2a33a675831d9c6c178 /lib
parent4b954598a47ba07034aab9af8ddd485bdc3d5b16 (diff)
parent2356d198d2b4ddec24efea98271cb3be230bc787 (diff)
downloadlinux-a4e98a30bc958694579dd5346aa6fcd38b5afe86.tar.xz
Merge tag 'bitmap-6.5-rc5' of https://github.com:/norov/linux
Pull bitmap fixes from Yury Norov: - Fix for bitmap documentation - Fix for kernel build under certain configurations * tag 'bitmap-6.5-rc5' of https://github.com:/norov/linux: lib/bitmap: workaround const_eval test build failure cpumask: eliminate kernel-doc warnings
Diffstat (limited to 'lib')
-rw-r--r--lib/Makefile6
-rw-r--r--lib/cpumask.c5
-rw-r--r--lib/test_bitmap.c8
3 files changed, 14 insertions, 5 deletions
diff --git a/lib/Makefile b/lib/Makefile
index 42d307ade225..1ffae65bb7ee 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -82,7 +82,13 @@ obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o
obj-$(CONFIG_TEST_DYNAMIC_DEBUG) += test_dynamic_debug.o
obj-$(CONFIG_TEST_PRINTF) += test_printf.o
obj-$(CONFIG_TEST_SCANF) += test_scanf.o
+
obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o
+ifeq ($(CONFIG_CC_IS_CLANG)$(CONFIG_KASAN),yy)
+# FIXME: Clang breaks test_bitmap_const_eval when KASAN and GCOV are enabled
+GCOV_PROFILE_test_bitmap.o := n
+endif
+
obj-$(CONFIG_TEST_UUID) += test_uuid.o
obj-$(CONFIG_TEST_XARRAY) += test_xarray.o
obj-$(CONFIG_TEST_MAPLE_TREE) += test_maple_tree.o
diff --git a/lib/cpumask.c b/lib/cpumask.c
index de356f16773a..a7fd02b5ae26 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -45,6 +45,7 @@ EXPORT_SYMBOL(cpumask_next_wrap);
* alloc_cpumask_var_node - allocate a struct cpumask on a given node
* @mask: pointer to cpumask_var_t where the cpumask is returned
* @flags: GFP_ flags
+ * @node: memory node from which to allocate or %NUMA_NO_NODE
*
* Only defined when CONFIG_CPUMASK_OFFSTACK=y, otherwise is
* a nop returning a constant 1 (in <linux/cpumask.h>)
@@ -157,7 +158,9 @@ EXPORT_SYMBOL(cpumask_local_spread);
static DEFINE_PER_CPU(int, distribute_cpu_mask_prev);
/**
- * cpumask_any_and_distribute - Return an arbitrary cpu within srcp1 & srcp2.
+ * cpumask_any_and_distribute - Return an arbitrary cpu within src1p & src2p.
+ * @src1p: first &cpumask for intersection
+ * @src2p: second &cpumask for intersection
*
* Iterated calls using the same srcp1 and srcp2 will be distributed within
* their intersection.
diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index 187f5b2db4cf..f2ea9f30c7c5 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -1161,6 +1161,10 @@ static void __init test_bitmap_print_buf(void)
}
}
+/*
+ * FIXME: Clang breaks compile-time evaluations when KASAN and GCOV are enabled.
+ * To workaround it, GCOV is force-disabled in Makefile for this configuration.
+ */
static void __init test_bitmap_const_eval(void)
{
DECLARE_BITMAP(bitmap, BITS_PER_LONG);
@@ -1186,11 +1190,7 @@ static void __init test_bitmap_const_eval(void)
* the compiler is fixed.
*/
bitmap_clear(bitmap, 0, BITS_PER_LONG);
-#if defined(__s390__) && defined(__clang__)
- if (!const_test_bit(7, bitmap))
-#else
if (!test_bit(7, bitmap))
-#endif
bitmap_set(bitmap, 5, 2);
/* Equals to `unsigned long bitopvar = BIT(20)` */